From 658e9d9bba136071231c0bc8c9031868f71fa0b1 Mon Sep 17 00:00:00 2001
From: realbigsean <sean@sigmaprime.io>
Date: Wed, 7 Dec 2022 15:40:51 -0500
Subject: [PATCH] saturating sub epoch for blob boundary

---
 beacon_node/beacon_chain/src/beacon_chain.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/beacon_node/beacon_chain/src/beacon_chain.rs b/beacon_node/beacon_chain/src/beacon_chain.rs
index 0c053b14e0..c5c5c90526 100644
--- a/beacon_node/beacon_chain/src/beacon_chain.rs
+++ b/beacon_node/beacon_chain/src/beacon_chain.rs
@@ -5428,7 +5428,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 self.epoch().ok().map(|current_epoch| {
                     std::cmp::max(
                         fork_epoch,
-                        current_epoch - *MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS,
+                        current_epoch.saturating_sub(*MIN_EPOCHS_FOR_BLOBS_SIDECARS_REQUESTS),
                     )
                 })
             })